On Sat, Jun 12, 2010 at 3:14 PM, Gabriel M. Beddingfield <[email protected] > wrote:
> > > On Sat, 12 Jun 2010, Jeremy wrote: > > Can you tell me where I might find some documentation on the external UI >> extension? When I followed that link, I followed the URI in the header >> file >> to >> >> #define LV2_EXTERNAL_UI_URI "http://lv2plug.in/ns/extensions/ui#external"; >> > > The header is also the documentation, as is the DSSI-like universal > "wrapper" example. > > > If that is the *internal* UI extension, and seperate from the *external* >> UI >> extension, is there some other wiki page about the external UI extension? >> >> Also, what is the difference? I understand the concept of an external UI, >> which is a seperate window launched by the plugin host which controls the >> plugin inputs, but I don't really understand what an internal UI would be. >> Wouldn't that just be the generic GUI generated by the host? >> > > The difference: > > How does the UI and the plugin communicate? > > Internal: Via LV2 Event messages. > External: Via any inter-process communication system > you can figure out... often OSC. > > Who does the UI communicate with? > > Internal: The LV2 host application. > External: The plugin via the IPC mechanism. > > Who does the plugin communicate with? > > Internal: The LV2 host application. > External: Both the LV2 host application and > anyone connected to it's IPC channel. > > Who is responsible for drawing the GUI components? > > Internal: The LV2 host application. > External: An external process is spawned and > is responsible for all I/O. > > Hope this helps! > > -gabriel > Thanks, that helps a lot. Now that I understand things better, I think I realize that using an internal UI would be more what I want. If there is already a system in place for communicating basic input controls, I don't see why I should reinvent it simply to use Qt widgets. However, the fact that I was referred to using external_ui seems to imply that an internal Qt Gui is not possible. The fact that ui:GtkGUI exists and ui:QtGUI does not also seems to indicate so. This<http://lists.lv2plug.in/pipermail/devel-lv2plug.in/2010-March/000505.html>mailing list post says "If you want to write a Qt GUI, make a URI for a Qt UI type, and implement it just as the Gtk ones do." Since I can't find any URI for Qt GUIs, does this mean that it hasn't been made yet? Or have things changed since that post? Jeremy
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